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260509-1jyx4sdv7sAnalysis
- max time kernel
97s - max time network
104s - platform
windows11-21h2_x64 - resource
win11-20250619-en - resource tags
- submitted
01/07/2025, 18:46
General
- Target mouse_2.exe
- Size 984KB
- Sample250701-xepxvsxwft
- SHA256 03968a3a5a7a880feefca31686fcfbed445080a0c06eda2b6d623757179b782c
Malware Config
Signatures
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- MassLogger Main payload 1 IoCs
- Masslogger family
- ReZer0 packer 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 7 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\mouse_2.exe"C:\Users\Admin\AppData\Local\Temp\mouse_2.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aqkfZm" /XML "C:\Users\Admin\AppData\Local\Temp\tmp10BF.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\mouse_2.exe"{path}"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\mouse_2.exe"{path}"2⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
mouse_2.exe.log
tmp10BF.tmp
memory/3116-5-0x0000000004E70000-0x0000000004E7A000-memory.dmp
memory/3116-1-0x0000000007100000-0x00000000071C0000-memory.dmp
memory/3116-4-0x000000000A560000-0x000000000A5F2000-memory.dmp
memory/3116-0-0x0000000000060000-0x000000000015C000-memory.dmp
memory/3116-6-0x00000000066C0000-0x00000000066C8000-memory.dmp
memory/3116-7-0x0000000004EA0000-0x0000000004EB0000-memory.dmp
memory/3116-8-0x00000000066D0000-0x000000000676C000-memory.dmp
memory/3116-9-0x00000000068F0000-0x000000000699E000-memory.dmp
memory/3116-2-0x0000000004EA0000-0x0000000004EB0000-memory.dmp
memory/3116-3-0x000000000A970000-0x000000000AF16000-memory.dmp
memory/6080-13-0x0000000000400000-0x00000000004A8000-memory.dmp
memory/6080-16-0x00000000054A0000-0x00000000054B0000-memory.dmp
memory/6080-17-0x0000000002E40000-0x0000000002E84000-memory.dmp
memory/6080-18-0x00000000055B0000-0x0000000005616000-memory.dmp
memory/6080-19-0x00000000054A0000-0x00000000054B0000-memory.dmp
memory/6080-30-0x0000000007820000-0x0000000007870000-memory.dmp
memory/6080-38-0x00000000054A0000-0x00000000054B0000-memory.dmp
memory/6080-42-0x00000000054A0000-0x00000000054B0000-memory.dmp